EXT4-fs (loop2): free_blocks=2415919104 EXT4-fs (loop2): dirty_blocks=32 EXT4-fs (loop2): Block reservation details EXT4-fs (loop2): i_reserved_data_blocks=2 ====================================================== WARNING: possible circular locking dependency detected 4.19.211-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.0/10202 is trying to acquire lock: 000000007cdcf413 (&HFSPLUS_I(inode)->extents_lock){+.+.}, at: hfsplus_file_extend+0x1bb/0xf40 fs/hfsplus/extents.c:457 but task is already holding lock: 00000000090fe96c (&tree->tree_lock){+.+.}, at: hfsplus_find_init+0x1b7/0x220 fs/hfsplus/bfind.c:30 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&tree->tree_lock){+.+.}: hfsplus_file_truncate+0xde7/0x1040 fs/hfsplus/extents.c:595 hfsplus_setattr+0x1e7/0x310 fs/hfsplus/inode.c:263 notify_change+0x70b/0xfc0 fs/attr.c:334 do_truncate+0x134/0x1f0 fs/open.c:63 handle_truncate fs/namei.c:3009 [inline] do_last fs/namei.c:3427 [inline] path_openat+0x2308/0x2df0 fs/namei.c:3537 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 do_sys_open+0x3b3/0x520 fs/open.c:1085 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (&HFSPLUS_I(inode)->extents_lock){+.+.}: __mutex_lock_common kernel/locking/mutex.c:937 [inline] __mutex_lock+0xd7/0x1190 kernel/locking/mutex.c:1078 hfsplus_file_extend+0x1bb/0xf40 fs/hfsplus/extents.c:457 hfsplus_bmap_reserve+0x298/0x440 fs/hfsplus/btree.c:357 hfsplus_rename_cat+0x272/0x1490 fs/hfsplus/catalog.c:456 hfsplus_unlink+0x49c/0x820 fs/hfsplus/dir.c:376 vfs_unlink+0x27d/0x4e0 fs/namei.c:4002 do_unlinkat+0x3b8/0x660 fs/namei.c:4065 do_coredump+0x1f9c/0x2d60 fs/coredump.c:687 get_signal+0xed9/0x1f70 kernel/signal.c:2583 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163 prepare_exit_to_usermode+0x277/0x2d0 arch/x86/entry/common.c:198 retint_user+0x8/0x18 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&tree->tree_lock); lock(&HFSPLUS_I(inode)->extents_lock); lock(&tree->tree_lock); lock(&HFSPLUS_I(inode)->extents_lock); *** DEADLOCK *** 5 locks held by syz-executor.0/10202: #0: 00000000734edf29 (sb_writers#14){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 00000000734edf29 (sb_writers#14){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360 #1: 000000000373d9ec (&type->i_mutex_dir_key#8/1){+.+.}, at: inode_lock_nested include/linux/fs.h:783 [inline] #1: 000000000373d9ec (&type->i_mutex_dir_key#8/1){+.+.}, at: do_unlinkat+0x27d/0x660 fs/namei.c:4051 #2: 00000000ee565d25 (&sb->s_type->i_mutex_key#21){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #2: 00000000ee565d25 (&sb->s_type->i_mutex_key#21){+.+.}, at: vfs_unlink+0xca/0x4e0 fs/namei.c:3993 #3: 0000000016db65b4 (&sbi->vh_mutex){+.+.}, at: hfsplus_unlink+0x140/0x820 fs/hfsplus/dir.c:370 #4: 00000000090fe96c (&tree->tree_lock){+.+.}, at: hfsplus_find_init+0x1b7/0x220 fs/hfsplus/bfind.c:30 stack backtrace: CPU: 0 PID: 10202 Comm: syz-executor.0 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 print_circular_bug.constprop.0.cold+0x2d7/0x41e kernel/locking/lockdep.c:1222 check_prev_add kernel/locking/lockdep.c:1866 [inline] check_prevs_add kernel/locking/lockdep.c:1979 [inline] validate_chain kernel/locking/lockdep.c:2420 [inline] __lock_acquire+0x30c9/0x3ff0 kernel/locking/lockdep.c:3416 lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908 __mutex_lock_common kernel/locking/mutex.c:937 [inline] __mutex_lock+0xd7/0x1190 kernel/locking/mutex.c:1078 hfsplus_file_extend+0x1bb/0xf40 fs/hfsplus/extents.c:457 hfsplus_bmap_reserve+0x298/0x440 fs/hfsplus/btree.c:357 hfsplus_rename_cat+0x272/0x1490 fs/hfsplus/catalog.c:456 hfsplus_unlink+0x49c/0x820 fs/hfsplus/dir.c:376 vfs_unlink+0x27d/0x4e0 fs/namei.c:4002 do_unlinkat+0x3b8/0x660 fs/namei.c:4065 do_coredump+0x1f9c/0x2d60 fs/coredump.c:687 get_signal+0xed9/0x1f70 kernel/signal.c:2583 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163 prepare_exit_to_usermode+0x277/0x2d0 arch/x86/entry/common.c:198 retint_user+0x8/0x18 RIP: 0033:0x7f8e0735f101 Code: c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 48 3d 01 f0 ff ff 73 01 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f RSP: 002b:00000000200001e0 EFLAGS: 00010217 RAX: 0000000000000000 RBX: 00007f8e0747f2c0 RCX: 00007f8e0735f0f9 RDX: 0000000020000200 RSI: 00000000200001e0 RDI: 0000000000000000 RBP: 00007f8e073baae9 R08: 0000000020000100 R09: 0000000020000100 R10: 0000000020000240 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe1a38adcf R14: 00007f8e0584d300 R15: 0000000000022000 EXT4-fs (loop2): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs (loop2): Online defrag not supported with bigalloc EXT4-fs error (device loop2): ext4_mb_generate_buddy:744: group 0, block bitmap and bg descriptor inconsistent: 25 vs 150994969 free clusters EXT4-fs (loop2): Delayed block allocation failed for inode 18 at logical offset 0 with max blocks 64 with error 28 EXT4-fs (loop2): This should not happen!! Data will be lost EXT4-fs (loop2): Total free blocks count 0 EXT4-fs (loop2): Free/Dirty block details EXT4-fs (loop2): free_blocks=2415919104 EXT4-fs (loop2): dirty_blocks=64 EXT4-fs (loop2): Block reservation details EXT4-fs (loop2): i_reserved_data_blocks=4 EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue REISERFS (device loop3): found reiserfs format "3.6" with non-standard journal EXT4-fs (loop1): Online defrag not supported with bigalloc REISERFS (device loop3): using ordered data mode EXT4-fs error (device loop1): ext4_mb_generate_buddy:744: group 0, block bitmap and bg descriptor inconsistent: 25 vs 150994969 free clusters reiserfs: using flush barriers EXT4-fs (loop1): Delayed block allocation failed for inode 18 at logical offset 0 with max blocks 32 with error 28 REISERFS (device loop3): journal params: device loop3, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 EXT4-fs (loop1): This should not happen!! Data will be lost REISERFS (device loop3): checking transaction log (loop3) EXT4-fs (loop1): Total free blocks count 0 REISERFS (device loop3): Using r5 hash to sort names EXT4-fs (loop1): Free/Dirty block details REISERFS (device loop3): Created .reiserfs_priv - reserved for xattr storage. EXT4-fs (loop1): free_blocks=2415919104 EXT4-fs (loop1): dirty_blocks=32 EXT4-fs (loop1): Block reservation details EXT4-fs (loop1): i_reserved_data_blocks=2 base_sock_release(0000000066da60c2) sk= (null) audit: type=1804 audit(1676725994.761:9): pid=10253 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir2215637337/syzkaller.uvaZ9V/7/file1/bus" dev="loop3" ino=4 res=1 audit: type=1804 audit(1676725994.811:10): pid=10296 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.3" name="/root/syzkaller-testdir2215637337/syzkaller.uvaZ9V/7/file1/bus" dev="loop3" ino=4 res=1 audit: type=1804 audit(1676725994.821:11): pid=10253 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir2215637337/syzkaller.uvaZ9V/7/file1/bus" dev="loop3" ino=4 res=1 base_sock_release(000000003aee692a) sk= (null) base_sock_release(00000000656ba0db) sk=000000001da338e9 base_sock_release(0000000035e7a75f) sk=0000000001bd0efe EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue base_sock_release(0000000010e6d67a) sk= (null) audit: type=1804 audit(1676725995.421:12): pid=10362 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir2215637337/syzkaller.uvaZ9V/8/bus" dev="sda1" ino=13970 res=1 base_sock_release(00000000fac52f00) sk= (null) EXT4-fs (loop1): Online defrag not supported with bigalloc REISERFS (device loop3): found reiserfs format "3.6" with non-standard journal audit: type=1804 audit(1676725995.461:13): pid=10363 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.3" name="/root/syzkaller-testdir2215637337/syzkaller.uvaZ9V/8/bus" dev="sda1" ino=13970 res=1 REISERFS (device loop3): using ordered data mode audit: type=1804 audit(1676725995.491:14): pid=10370 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir2215637337/syzkaller.uvaZ9V/8/bus" dev="sda1" ino=13970 res=1 EXT4-fs error (device loop1): ext4_mb_generate_buddy:744: group 0, block bitmap and bg descriptor inconsistent: 25 vs 150994969 free clusters reiserfs: using flush barriers REISERFS (device loop3): journal params: device loop3, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 EXT4-fs (loop1): Delayed block allocation failed for inode 18 at logical offset 0 with max blocks 32 with error 28 REISERFS (device loop3): checking transaction log (loop3) EXT4-fs (loop1): This should not happen!! Data will be lost EXT4-fs (loop1): Total free blocks count 0 EXT4-fs (loop1): Free/Dirty block details EXT4-fs (loop1): free_blocks=2415919104 EXT4-fs (loop1): dirty_blocks=32 EXT4-fs (loop1): Block reservation details EXT4-fs (loop1): i_reserved_data_blocks=2 REISERFS (device loop3): Using r5 hash to sort names REISERFS (device loop3): Created .reiserfs_priv - reserved for xattr storage. base_sock_release(00000000bc617b96) sk=0000000049455321 base_sock_release(00000000a4c6e140) sk=000000007e017ef1 base_sock_release(00000000eed6d24d) sk= (null) audit: type=1804 audit(1676725996.761:15): pid=10468 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir2215637337/syzkaller.uvaZ9V/9/bus" dev="sda1" ino=13973 res=1 base_sock_release(0000000047885373) sk= (null) REISERFS (device loop3): found reiserfs format "3.6" with non-standard journal REISERFS (device loop3): using ordered data mode reiserfs: using flush barriers audit: type=1804 audit(1676725996.791:16): pid=10468 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir2215637337/syzkaller.uvaZ9V/9/bus" dev="sda1" ino=13973 res=1 REISERFS warning (device loop3): sh-458 journal_init_dev: cannot init journal device 'unknown-block(7,3)': -4 audit: type=1804 audit(1676725996.791:17): pid=10468 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir2215637337/syzkaller.uvaZ9V/9/bus" dev="sda1" ino=13973 res=1 REISERFS warning (device loop3): sh-462 journal_init: unable to initialize journal device audit: type=1804 audit(1676725996.791:18): pid=10468 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir2215637337/syzkaller.uvaZ9V/9/bus" dev="sda1" ino=13973 res=1 base_sock_release(00000000626b321a) sk=00000000cdbaf656 base_sock_release(000000000b9389ea) sk=00000000e7d933a1 REISERFS (device loop2): found reiserfs format "3.6" with non-standard journal ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 REISERFS (device loop2): using ordered data mode reiserfs: using flush barriers REISERFS (device loop2): journal params: device loop2, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop5): found reiserfs format "3.6" with non-standard journal REISERFS (device loop2): checking transaction log (loop2) REISERFS (device loop5): using ordered data mode reiserfs: using flush barriers REISERFS (device loop2): Using r5 hash to sort names REISERFS (device loop2): Created .reiserfs_priv - reserved for xattr storage.